21332201232 has 20 divisors (see below), whose sum is σ = 55108186640. Its totient is φ = 7110733728.

The previous prime is 21332201197. The next prime is 21332201287. The reversal of 21332201232 is 23210223312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21332201199 and 21332201208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222210382 + ... + 222210477.

It is an arithmetic number, because the mean of its divisors is an integer number (2755409332).

Almost surely, 2^21332201232 is an apocalyptic number.

It is an amenable number.

21332201232 is an abundant number, since it is smaller than the sum of its proper divisors (33775985408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21332201232 is a wasteful number, since it uses less digits than its factorization.

21332201232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444420870 (or 444420864 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21332201232 its reverse (23210223312), we get a palindrome (44542424544).

The spelling of 21332201232 in words is "twenty-one billion, three hundred thirty-two million, two hundred one thousand, two hundred thirty-two".